Which physical property would not be useful for finding the difference between baking soda and cornstarch? a) density b) mass c) melting point d) solubility

Answers

Answer 1

Answer:

Answer:

mass

Explanation:

The mass only tells us the amount of a material. Density, melting points, and solubility are properties of a compound and will be different in this case.

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What is the energy of a photon whose frequency is 6.0x10^20 hz?

Answers

Energy of photon is given by formula

$E = h\nu$

here

h = Planck's constant

$h = 6.6* 10^(-34)$

$\nu = frequency = 6 * 10^(20)Hz$

now the energy is given by

$E = 6.6*10^(-34) * 6 * 10^(20)$

$E = 3.96 * 10^(-13) J$

give me some answer choices and i will be happy to help

An automobile having a mass of 941 kg is driven into a brick wall in a safety test. The bumper behaves like a spring of constant 2.37 × 106 N/m and compresses 1.61 cm as the car is brought to rest What was the speed of the car before impact, assuming no energy is lost during impact with the wall? Answer in units of

Answers

Answer:

v = 0.653 m/s

Explanation:

given,

mass of auto mobile = 941 Kg

spring constant = 2.37 x 10⁶ N/m

compressed by the car = 1.61 cm = 0.0161 m

we have,

$(1)/(2)kx^2 = (1)/(2)mv^2$

$v = \sqrt{(kx^2)/(m)}$

$v = \sqrt{(2.37* 10^6* 0.0161^2)/(941)}$

v = 0.653 m/s

hence, velocity of car before impact is equal to 0.653 m/s

Just as the skydiver steps out of the helicopter Somos what do you start a stopwatch so the time is zero at the skydiver steps out of the plane what is the skydivers dour velocity at the instant just before starting to fall

Answers

The same as that of the aircraft that he /she is in. If flying level, it would be zero.

What is the pressure exerted by a column of water 80 cm high ?

Answers

Answer:

$P=7,840\ Pa$

Explanation:

Pressure Exerted by a Column of Liquid

The pressure P exerted by a column of liquid of height h and density ρ is given by the hydrostatic pressure equation:

P = ρgh

Where ρ is the density of the liquid, g is the acceleration of gravity g=9.8m/s^2, and h is the height of the column of liquid.

The data provided is as follows:

$\rho=1000\ Kg/m^3$

$g=9.8m/s^2$

$h=80\ cm = 0.8\ m$

The pressure is:

$P = 1000\ Kg/m^3\cdot 9.8\ m/s^2 \cdot 0.8\ m$

$\boxed{P=7,840\ Pa}$

Which of these takes about 365 days to complete? Earth rotating once on its axis Earth rotating once on its axis Earth revolving once around the Sun Earth revolving once around the Sun the moon revolving once around Earth the moon revolving once around Earth the sun revolving once around Eart

Answers

Answer:

Earth revolving once around the Sun

Explanation:

The Earth is one of the planets that make up the Solar system. The earth undergoes two phenomena called "ROTATION" and "REVOLUTION". Rotation refers to the moving around of an object along its own axis while revolution refers to the moving of an object around another object.

The Earth rotates (along its axis) to produce the day and night (24 hours). However, the revolution of the Earth around the largest planetary body, which is the SUN, takes approximately 365 days to complete. Hence, the Earth's revolution around the sun produces the year (365 days).

What is the potential energy of a 2-kilogram potted plant that is on a 1 meter-high plant stand?

Answers

Potential energy is the energy stored by an object due to its position or arrangement.

The potential energy of the potted plant is 19.6 joule.

What is the potential energy?

Potential energy is the energy stored by an object due to its position or arrangement.

It can be given as,

$U=mgh$

Here, $m$ is the mass of the object, $g$ is the gravitational force experienced by the object and $h$ is the height.

Given information-

The mass of the potted plant is 2 kilogram.

The height of the plant stand is 1 meter.

The value of the gravity force is 9.81 meter per second squared on the surface of the earth.

To find the potential energy put the values in the above formula as,

$U=2*9.81*1\nU=19.6$

Hence the potential energy of the potted plant is 19.6 joule.

Learn more about the potential energy here;

brainly.com/question/1242059

Final answer:

The potential energy of a 2-kilogram potted plant on a 1 meter-high plant stand is 19.6 J.

Explanation:

The potential energy of a 2-kilogram potted plant on a 1 meter-high plant stand can be calculated using the gravitational potential energy formula:

PE = mgh

Where:

PE is the potential energy
m is the mass (2 kg)
g is the acceleration due to gravity (9.8 m/s²)
h is the height (1 meter)

Substituting the values into the formula:

PE = (2 kg)(9.8 m/s²)(1 meter) = 19.6 J

Learn more about Potential Energy here:

brainly.com/question/24284560

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